We also spotted this rather fascinating, if slightly disturbing, feature on the Nautilus website about the “elephant’s foot”, which is the most lethal piece of nuclear waste on the planet. Science writer Kyle Hill hauntingly describes the “foot” – a remnant of the Chernobyl nuclear disaster – that is a toxic mix of melted concrete, sand and core shielding material that melted together. Even today, a mere hour of exposure to it will cost you your life. Read the feature to find out just how the emergency crews dealing with the disaster dealt with the foot and how in the world they actually managed to photograph and take samples of it at the time.